Objective Questions on Carbon and its compounds

Objective Questions on Carbon and its compounds1-Following is (are) true(A) All living structures are carbon based(B) The earth’s crust has only 0.02% carbon(C) The atmosphere has 0.03% of carbon dioxide(D) All of the above

2-Following is (are) the property(ies) of ionic compounds.(A) They have high melting and boiling points(B) They conduct electricity in solution or in molten state(C) Both (A) and (B)(D) None of the above